Steema Central

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<Window x:Class="WpfTestTeeChart.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
		xmlns:my="clr-namespace:Steema.TeeChart.WPF;assembly=TeeChart.WPF"
        Title="MainWindow" Height="350" Width="525">
    <Grid Name="NameGrid">
		<Grid.RowDefinitions>
			<RowDefinition Height="90*"></RowDefinition>
			<RowDefinition Height="10*"></RowDefinition>
		</Grid.RowDefinitions>		
		<AdornerDecorator>
			<my:TChart Margin="0,0,0,0" Name="MyTeeChart" Grid.Row="2" />
		</AdornerDecorator>
		<Label Content="Start" Height="28" HorizontalAlignment="Left" Name="label1" VerticalAlignment="Top" Grid.Row="1" />
		<Label Content="End" Height="28" HorizontalAlignment="Left" Margin="133,0,0,0" Name="label2" VerticalAlignment="Top" Grid.Row="1" />
	</Grid>
</Window>

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namespace WpfTestTeeChart
{
	/// <summary>
	/// Interaction logic for MainWindow.xaml
	/// </summary>
	public partial class MainWindow : Window
	{
		private Steema.TeeChart.WPF.Styles.Line _lineSeries1;
		private Steema.TeeChart.WPF.Tools.DrawLine _drawLine1;

		public MainWindow()
		{
			InitializeComponent();

			// Set chart properties
			MyTeeChart.Aspect.View3D = false;
			MyTeeChart.Header.Text = "Test for Tool DragLine";
			MyTeeChart.AutoRepaint = true;

			// Create line series and set properities and add to series
			_lineSeries1 = new Steema.TeeChart.WPF.Styles.Line();
			_lineSeries1.Color = System.Windows.Media.Colors.Blue;
			_lineSeries1.ColorEach = false;
			_lineSeries1.LinePen.Color = System.Windows.Media.Colors.Green;
			_lineSeries1.Title = "lineSeries1";
			_lineSeries1.XValues.DataMember = "X";
			_lineSeries1.XValues.Order = Steema.TeeChart.WPF.Styles.ValueListOrder.Ascending;
			_lineSeries1.YValues.DataMember = "Y";
			_lineSeries1.FillSampleValues();
			MyTeeChart.Series.Add(_lineSeries1);

			// Create drawline and set properties and add to tools
			_drawLine1 = new Steema.TeeChart.WPF.Tools.DrawLine();
			_drawLine1.EnableDraw = false;
			_drawLine1.EnableSelect = true;
			_drawLine1.Style = Steema.TeeChart.WPF.Tools.DrawLineStyle.Line;
			_drawLine1.DragLine += new Steema.TeeChart.WPF.Tools.DrawLineEventHandler(drawLine1_DragLine);			
			MyTeeChart.Tools.Add(_drawLine1);

			Steema.TeeChart.WPF.Tools.DrawLineItem drawLineItem = new Steema.TeeChart.WPF.Tools.DrawLineItem(_drawLine1);
			double tmp = _lineSeries1.YValues.Range / 5.0;
			drawLineItem.StartPos = new Steema.TeeChart.WPF.Drawing.PointDouble(5, _lineSeries1.YValues.Maximum - tmp);
			drawLineItem.EndPos = new Steema.TeeChart.WPF.Drawing.PointDouble(15, _lineSeries1.YValues.Minimum + tmp);
			drawLineItem.Pen.Color = System.Windows.Media.Colors.Black;
			drawLineItem.Pen.Width = 4;
		}

		private void drawLine1_DragLine(Steema.TeeChart.WPF.Tools.DrawLine sender)
		{
			ShowDrawLinePosition();
		}

		private void ShowDrawLinePosition()
		{
			Steema.TeeChart.WPF.Tools.DrawLineItem I = _drawLine1.Selected;
			label1.Content = "Start: (x: " + I.StartPos.X.ToString("0.00") + ", y: " + I.StartPos.Y.ToString("0.00") + ")";
			label2.Content = "End: (x: " + I.EndPos.X.ToString("0.00") + ", y: " + I.EndPos.Y.ToString("0.00") + ")";
		}
	}
}

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 public MainWindow()
    {
      //... other code ...
      MyTeeChart.MouseUp += MyTeeChart_MouseUp;
      MyTeeChart.MouseMove += MyTeeChart_MouseMove;

    }

    void MyTeeChart_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
    {
      _drawLine1.EnableDraw = true;
    }

    void MyTeeChart_MouseUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
    {
      _drawLine1.EnableDraw = true;
    }